X b berg



(No Model.)

T. DINKELBERG.

WRENCH.

606,381 Patented June 28, 1898.

INVENTOB WITNESSES.

A TTORNEYS- THE Nonms PETERS cu, puoromma, WASNINGTCN. n. c.

THEODORE DINKELBERG, OF NEYV YORK, N. Y ASSIGNOR TO HIMSELF AND EDW'ARD IJEANDER GINGI, OF SAME PLACE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 606,381, dated June 28, 1898.

Application filed September 23, 1897. $erial-No. 652,749. (No model.)

BERG, a citizen of the United States, residing 'at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in renches, of

which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to pipe-wrenches, and more particularly to that class thereof which are especially designed for use on pipes which have highly glazed or polished surfaces.

The object of the invention is to provide a wrench of the above-described class which can be used on pipes whose surfaces are highly polished or glazed without danger of mutilating or scratching the same, but which will be highly efficient in operation, simple in construction, infallible in practice, and inexpensive to manufacture.

The invention consists in the novel features of construction hereinafter set forth and described, and more particularly pointed out in the claims hereto appended.

Referring to the accompanying drawings, which form a part of this specification, Figure 1 is a plan view of my improved form of pipewrench; and Fig. 2 is an elevation thereof, showing the various parts in their relation to the pipe. 7

Like letters refer to like parts in both views.

In the accompanying drawings, a denotes the handle of the wrench, which has pivoted near one extremity thereof a yoke 12, the dimensions of which are sufficient to receive one end of the flexible textile band d, which is retained in the proper relation to the handle by means of this yoke only. This band d is preferably made of canvas several folds in thickness to insure greater strength and of any desired length, according to the dimensions of the largest pipe in connection with which it is desired to be used. It will readily .be observed that the band d is readily detachable, and bands of different lengths may be provided to facilitate the operation of the device.

. The operation of my improved pi pe-wrench is-as follows: The band cl is passed around the pipe and looped between the same and the end thereof, which has been passed under the yoke. Any pressure then exerted on the handle in a manner which will force the end f thereof against the looped portion of the canvas will result in drawing-said band so I tightly about the pipe as to produce sufficient friction to permit said pipe being turned without any slipping of the various parts. The greater the strain exerted on the handle the greater will be the binding force of the band cl, the yoke I) being so arranged as to prevent any slipping of said band under'any'circumstances when in use.

By the means above described I have pro duced a cheap and efficient pipe-wrench which may be used in connection with open-plumbin g composed of highly polished or glazed pipe without the slightest danger of scratching or marring the same.

If it is found in actual use that the canvas band d does not readily take hold of the pipe,

a little plaster-of-paris may be placed there on to insure a perfect operation of the same.

It is to be observed that it is not myintention to confine my invention to the precise construction herein shown and described, as it is obvious that there may be many variations in minor details of construction without departing from the spirit of my invention.

Having fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a pipe-wrench the combination with a handle, of a yoke pivotally connected there with adjacent to one end thereof, and an in- I dependent flexible textile band adapted to encompass a pipe, and to be secured to said handle by being compressed between said handle and said yoke,substantially as de scribed.

2. In a pipewrench, the combination with a handle having a semicircular end, of a yoke pivotally connected therewith adjacent to one end thereof, and an independent flexible texence of the subscribing Witnesses, this 21st tile band adapted to encompass a pipe and to day of September, 1897.

be secured to said handle by bein compressed 1, Y between said handle and said ygke, snbstan- '1 IIEODORE DINIxELBERG' 5 tially as described. \Vitnesses:

In testimony that I claim the foregoing as O. GERST,

my invention I have signed my name, in pres- M. A. KNOWLES. 

